Best Gear Oil

Asked by Mar 23, 2016 at 11:46 AM about the 2003 Subaru Impreza 2.5 RS

Question type: Maintenance & Repair

Impreza 2.5 RS manual shift sound is coarse, so I
checked the gear oil (yellow dipstick on the left (if
you open the hood perspective) or right side of car)
and it was very low. So I won't drive it until I fill it
with gear oil. I'm at 122,000 miles.

My questions are:

1). what's the best gear oil to buy?
2). from where?
3). How much gear oil should I fill.

I heard Redline 75w90 is the way to go, but I
wanted to ask Gurus first. (I did try to look for a
thread on this here but maybe I didn't search the
right question. Any insight would be greatly
appreciated!

2 Answers

6,910

Don't waste your money under any circumstances, as the Subie stick trans (and diff) do NOT put much stress on the gear oil. So top it off with any 75 or 80 or 90W molasses and it'll be ok. If what you can see is pretty black maybe you should drain it first and then add the 5qts needed, as it's still an easy and cheap job. I've seen original gear oils last 10+ years in these, so don't sweat it. HOWEVER, if you run too long on very low gear oil you may pick up some noise that might NOT go away with a drain and refill. May still operate quite fine, though. Just save your money, as the higher temp capabilities of RedLine et al our completely wasted on this low temp app.

Best Answer Mark helpful

Thank you so much, so 5 quarts will do because I checked the yellow dipstick and there is ABSOLUTELY NO oil left. So I'll pour in the 5 quarts, right? I read somewhere that it needed 3.7L?

Your Answer

Subaru Impreza Experts

  • #1
    TheSubaruGuruBoston
    Reputation
    1,050
  • #2
    F_O_R
    Reputation
    700
  • #3
    Nick Eidemiller
    Reputation
    480
View All

Related Models For Sale

Used Subaru Impreza WRX
43 Great Deals out of 1,186 listings starting at $4,000
Used Subaru Outback
354 Great Deals out of 35,521 listings starting at $999
Used Subaru Legacy
197 Great Deals out of 14,288 listings starting at $1,800
Used Subaru Impreza WRX STI
12 Great Deals out of 533 listings starting at $8,995
Used Subaru Forester
302 Great Deals out of 37,663 listings starting at $1,103
Used Honda Civic
573 Great Deals out of 52,764 listings starting at $1,500
Used Mazda MAZDA3
258 Great Deals out of 27,113 listings starting at $1,700
Used Honda Accord
838 Great Deals out of 87,589 listings starting at $1,444
Used Toyota Camry
1,072 Great Deals out of 76,710 listings starting at $1,100
Used Toyota Corolla
888 Great Deals out of 69,845 listings starting at $1,479
Used Honda CR-V
707 Great Deals out of 62,079 listings starting at $1,495

Used Cars For Sale

2017 Subaru Impreza For Sale
38 Great Deals out of 1,815 listings starting at $14,022
2016 Subaru Impreza For Sale
27 Great Deals out of 490 listings starting at $11,590
2015 Subaru Impreza For Sale
44 Great Deals out of 923 listings starting at $8,995
2014 Subaru Impreza For Sale
20 Great Deals out of 514 listings starting at $8,995
2013 Subaru Impreza For Sale
10 Great Deals out of 407 listings starting at $6,900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.